Case industrial tractors
J.I. Case 780 Construction King
The J.I. Case 780 Construction King is a backhoe loader tractor produced from 1971 to 1981. It features a 5.5L 4-cylinder diesel engine producing 120 hp gross and 111 hp net. The tractor has a two-speed power shift transmission with torque converter and power shuttle, two-wheel drive, and outboard planetary final drives. It includes pneumatic drum brakes and power steering, with a standard cab and optional heater. The hydraulic system has a capacity of 46 gallons with a total pump flow of 58 gpm. Dimensions include an 87-inch wheelbase, 295-inch length, and 93-inch width at rear wheels. The tractor weighs between 21,000 and 23,200 pounds depending on configuration. Attachments include a front-end loader with a 6,400 lbs lift capacity and a J.I. Case 18-foot or Extendahoe backhoe with digging depths up to 264 inches.
Power-
Founded-
Model780
Technical Specifications
Detailed specifications and technical data for J.I. Case 780 Construction King
Power
| Engine (net) | 111 hp (82.8 kW) |
|---|---|
| Engine (gross) | 120 hp (89.5 kW) |
Tires
| Other rear | 18.4x28 |
|---|---|
| Other front | 14.00x17.5 |
| Additional rear | 21Lx24 |
| Industrial rear | 18.4x24 |
| Industrial front | 9.00x20 |
Engine
| Type | diesel |
|---|---|
| Model | J.I. Case A336 BDT |
| Torque | 329 lb-ft (446.1 Nm) |
| Cooling | liquid-cooled |
| Starter | electric |
| Cylinders | 4-cylinder |
| Rated RPM | 2200 |
| Torque RPM | 1500 |
| Air cleaner | dry |
| Bore/Stroke | 4.625x5.00 inches (117 x 127 mm) |
| Fuel system | direct injection |
| Power (net) | 111 hp (82.8 kW) |
| Displacement | 336 ci (5.5 L) |
| Oil capacity | 11 qts (10.4 L) |
| Power (gross) | 120 hp (89.5 kW) |
| Starter volts | 24 |
| Coolant capacity | 26 qts (24.6 L) |
| Compression ratio | 16.5:1 |
Weight
| Shipping | 21000 lbs (9525 kg) |
|---|---|
| Max front axle static | 17000 lbs (7711 kg) |
| Shipping (Extendahoe) | 23200 lbs (10523 kg) |
| Max front axle dynamic | 68000 lbs (30844 kg) |
Capacity
| Fuel | 35 gal (132.5 L) |
|---|---|
| Hydraulic system | 46 gal (174.1 L) |
Dimensions
| Width | 93 inches (236 cm) (Width of tractor at rear wheels) |
|---|---|
| Length | 295 inches (749 cm) |
| Wheelbase | 87 inches (220 cm) |
| Rear tread | 74.5 inches (189 cm) |
| Front tread | 78 inches (198 cm) |
| Height (cab) | 117 inches (297 cm) |
| Height (backhoe) | 159 inches (403 cm) |
| Length (Extendahoe) | 297 inches (754 cm) |
| Clearance (rear axle) | 15.5 inches (39 cm) |
| Height (steering wheel) | 86 inches (218 cm) |
Electrical
| Batteries | 2 |
|---|---|
| Battery AH | 95 |
| Battery volts | 12 |
| Charging amps | 35 |
| Charging system | alternator |
Hydraulics
| Capacity | 46 gal (174.1 L) |
|---|---|
| Pump flow | 35 gpm (main pump) (132.5 lpm) |
| Total flow | 58 gpm (219.5 lpm) |
| Secondary pump flow | 23 gpm (87.1 lpm) |
Mechanical
| Cab | standard with optional heater |
|---|---|
| Drive | Two-wheel drive |
| Brakes | Pneumatic drum brakes |
| Final drives | outboard planetary |
| Power steering | Yes |
Production
| Type | Backhoe loader tractor |
|---|---|
| Years made | 1971 - 1981 |
| Manufacturer | J.I. Case |
Attachments
| Loader | Dump time2.4s Dump angle52° Lower time5.1s Raise time7.2s Bucket width95 inches (241 cm) Breakout force16000 lbs (7257 kg) Reach (dumped)39.875 inches (101 cm) Reach (ground)71.5 inches (181 cm) Height (at pin)131.5 inches (334 cm) Clearance (dumped)106 inches (269 cm) Rollback (ground line)37° Lift capacity (full at pin)6400 lbs (2903 kg) |
|---|---|
| Attachment overview | Front-end loader, Backhoe |
| J.I. Case 18-foot Backhoe | Swing Arc180° Backhoe typeJ.I. Case 18-foot Backhoe Bucket force13332 lbs (6047 kg) Digging depth220 inches (558 cm) Loading height152.5 inches (387 cm) Bucket Rotation155° Reach from pivot270.5 inches (687 cm) Transport height159 inches (403 cm) Dipperstick force10836 lbs (4915 kg) 2-Foot flat digging depth218 inches (553 cm) |
| J.I. Case Extendahoe Backhoe | Swing Arc180° Backhoe typeJ.I. Case Extendahoe Backhoe Bucket Rotation156° Transport height160 inches (406 cm) Bucket force (extended stick)13450 lbs (6100 kg) Bucket force (retracted stick)13450 lbs (6100 kg) Digging depth (extended stick)264 inches (670 cm) Digging depth (retracted stick)216 inches (548 cm) Reach from pivot (extended stick)317 inches (805 cm) Dipperstick force (extended stick)7992 lbs (3625 kg) Reach from pivot (retracted stick)271 inches (688 cm) Dipperstick force (retracted stick)10670 lbs (4839 kg) |
Transmission
| Type | power shift |
|---|---|
| Gears | 2 forward and reverse |
| Description | Two-speed power shift transmission with torque converter and power shuttle. |
| Oil capacity | 20 qts (18.9 L) |
Backhoe & Loader
| Dig depth | 220 inches (558 cm) |
|---|---|
| Dump angle | 52 inches (132 cm) |
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